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GET /api/1.1/patches/2221676/?format=api
{ "id": 2221676, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2221676/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260410055040.39233-18-kwilczynski@kernel.org/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/1.1/projects/28/?format=api", "name": "Linux PCI development", "link_name": "linux-pci", "list_id": "linux-pci.vger.kernel.org", "list_email": "linux-pci@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null }, "msgid": "<20260410055040.39233-18-kwilczynski@kernel.org>", "date": "2026-04-10T05:50:37", "name": "[17/20] alpha/PCI: Compute legacy size in pci_mmap_legacy_page_range()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "8beb55edb48bc5648b1dedd871063e1b2f28af02", "submitter": { "id": 86709, "url": "http://patchwork.ozlabs.org/api/1.1/people/86709/?format=api", "name": "Krzysztof Wilczyński", "email": "kwilczynski@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260410055040.39233-18-kwilczynski@kernel.org/mbox/", "series": [ { "id": 499398, "url": "http://patchwork.ozlabs.org/api/1.1/series/499398/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=499398", "date": "2026-04-10T05:50:21", "name": "PCI: Convert all dynamic sysfs attributes to static", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499398/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2221676/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2221676/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-pci+bounces-52279-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-pci@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=L9KhOCvw;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; helo=tor.lore.kernel.org;\n envelope-from=linux-pci+bounces-52279-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)", "smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=\"L9KhOCvw\"", "smtp.subspace.kernel.org;\n arc=none smtp.client-ip=10.30.226.201" ], "Received": [ "from tor.lore.kernel.org (tor.lore.kernel.org\n [IPv6:2600:3c04:e001:36c::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fsQsz231Gz1yGb\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 10 Apr 2026 15:51:51 +1000 (AEST)", "from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby tor.lore.kernel.org (Postfix) with ESMTP id 998B33014128\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 10 Apr 2026 05:51:49 +0000 (UTC)", "from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id E58F13264DC;\n\tFri, 10 Apr 2026 05:51:46 +0000 (UTC)", "from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org\n [10.30.226.201])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id C27AF30F52A;\n\tFri, 10 Apr 2026 05:51:46 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id 79227C19421;\n\tFri, 10 Apr 2026 05:51:43 +0000 (UTC)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1775800306; cv=none;\n b=Kj18TsN8Vn3HGcns/ye8oYa6XpsNWijUzry8XWBezvUhs0vj/Wt6QPONjCZzEfNwaUaLU9gTDBVk+rJcne4bHxcOpJN4IKUCQvdR7V59Mof4WVVdv0tFKT/YkUuWE7R0++jR42VOH/vmua4G1Ds++HkAA9n+/U7oHcZoIFOdFs4=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1775800306; c=relaxed/simple;\n\tbh=RaLaicXdVd13BfmiGv2VaH4swf8eCOhEtaGCnbo0iIg=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version:Content-Type;\n b=k48TmxHHgG3uyiXhjGzdqC04+T3xsapgBn0viThYVftM+ha672VhcCp3GEeWnxrGIrdISu7G2ljgLi0+/MzplMJKnGPemI+wJix22iaNiS4e80QeaQy8huW46YEn0jgRTb0QCV2U+//gRFik1rbvZ4ImhjAFlXNYIA+mQOsYYn8=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=L9KhOCvw; arc=none smtp.client-ip=10.30.226.201", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1775800306;\n\tbh=RaLaicXdVd13BfmiGv2VaH4swf8eCOhEtaGCnbo0iIg=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=L9KhOCvwhQBtoVpNr6HLSFDBoXOpjGQuwTz5mSKRMKHFJpTYUVqBAQbaySh5U/2c6\n\t SN44v4MFI2F7H8mEXNOvh7jTGhAh50/IkSeVwCDEPIPKv20uDiusCSdfc/BSpG9QHP\n\t YBGH0h4FMkgUZxvnpLFjQSMJHnYmJyVLRfptvRgl1MvTA0xUpcLDWOQffjysbKv2uF\n\t w+8TwLGglwIBY8Us/Km9F1tr4EGd0DKquEmHy9UcAzhCSt66wVtWFKYS/0/3m59ISp\n\t AfIgqbwJDk9Wo0Aiv4q36+2MA0J24+dk5j22Lj+MFY2PXNYq/fVP/AoUdu/hVm1lCu\n\t 8bWvlMrIwMmpQ==", "From": "=?utf-8?q?Krzysztof_Wilczy=C5=84ski?= <kwilczynski@kernel.org>", "To": "Bjorn Helgaas <bhelgaas@google.com>", "Cc": "Bjorn Helgaas <helgaas@kernel.org>,\n Manivannan Sadhasivam <mani@kernel.org>,\n Lorenzo Pieralisi <lpieralisi@kernel.org>,\n Magnus Lindholm <linmag7@gmail.com>, Matt Turner <mattst88@gmail.com>,\n Richard Henderson <richard.henderson@linaro.org>,\n Christophe Leroy <chleroy@kernel.org>,\n Madhavan Srinivasan <maddy@linux.ibm.com>,\n Michael Ellerman <mpe@ellerman.id.au>, Nicholas Piggin <npiggin@gmail.com>,\n Dexuan Cui <decui@microsoft.com>,\n =?utf-8?q?Krzysztof_Ha=C5=82asa?= <khalasa@piap.pl>,\n Lukas Wunner <lukas@wunner.de>, \"Oliver O'Halloran\" <oohall@gmail.com>,\n Saurabh Singh Sengar <ssengar@microsoft.com>,\n Shuan He <heshuan@bytedance.com>, Srivatsa Bhat <srivatsabhat@microsoft.com>,\n\t=?utf-8?q?Ilpo_J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>,\n linux-pci@vger.kernel.org, linux-alpha@vger.kernel.org,\n linuxppc-dev@lists.ozlabs.org", "Subject": "[PATCH 17/20] alpha/PCI: Compute legacy size in\n pci_mmap_legacy_page_range()", "Date": "Fri, 10 Apr 2026 05:50:37 +0000", "Message-ID": "<20260410055040.39233-18-kwilczynski@kernel.org>", "X-Mailer": "git-send-email 2.53.0", "In-Reply-To": "<20260410055040.39233-1-kwilczynski@kernel.org>", "References": "<20260410055040.39233-1-kwilczynski@kernel.org>", "Precedence": "bulk", "X-Mailing-List": "linux-pci@vger.kernel.org", "List-Id": "<linux-pci.vger.kernel.org>", "List-Subscribe": "<mailto:linux-pci+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-pci+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit" }, "content": "Currently, pci_mmap_legacy_page_range() reads the legacy resource\nsize from bus->legacy_mem->size or bus->legacy_io->size. This\ncouples the mmap bounds check to the struct pci_bus fields that\nwill be removed when legacy attributes are converted to static\ndefinitions.\n\nCompute the size directly from the known constants (0x100000 for\nmemory, 0xffff for I/O) and shift by 5 bits for sparse systems.\n\nSigned-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>\n---\n arch/alpha/kernel/pci-sysfs.c | 6 ++++--\n 1 file changed, 4 insertions(+), 2 deletions(-)", "diff": "diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c\nindex 27adfe6dbd5e..2da95d965e9c 100644\n--- a/arch/alpha/kernel/pci-sysfs.c\n+++ b/arch/alpha/kernel/pci-sysfs.c\n@@ -180,8 +180,10 @@ int pci_mmap_legacy_page_range(struct pci_bus *bus, struct vm_area_struct *vma,\n \tint sparse = has_sparse(hose, mmap_type);\n \tunsigned long res_size;\n \n-\tres_size = (mmap_type == pci_mmap_mem) ? bus->legacy_mem->size :\n-\t\t\t\t\t\t bus->legacy_io->size;\n+\tres_size = (mmap_type == pci_mmap_mem) ? 0x100000 : 0xffff;\n+\tif (sparse)\n+\t\tres_size <<= 5;\n+\n \tif (!__legacy_mmap_fits(hose, vma, res_size, sparse))\n \t\treturn -EINVAL;\n \n", "prefixes": [ "17/20" ] }